Separator for fibrous materials.



No. 853.618. PATBN'I'ED MAY 14, 1907.

y W. S. OSBORNE.

SEPARATO R FOR FIBROUS MATERIALS. nrmornon nun rns.1'.1aoe.

3 SHEETS-SHEET 1.

PATBNTED MAY 14. 1907.

W. S. OSBORNE.

,SBPARATOR FOR PIBROUS. MATERIALS. nrnmu'xon rILnn rna.1. 1ooe.

3 SEEETFBBBET 2.

-UN FEED STATES PATENT OFFICE. wmo gs OSBORNE, or HYDE PARK, MASSACHUSETTS, ASSIGNOR or ONE- Intnn-"ron F STURTEVANT COMPANY, or BOSTON, MASSACHUSETTS, A' CQRPQRATION or L'IASSACHUSETTS. v

'sEPARAToR FOR FIBRQUS MATERIALS.

No. 353,513. Specification of Letters Patent.

Application filed February 1, 1906. Serial Ho. 2 98,899

Patented May 14, 1907.

1 provcmcntin separators for fibrous mate? rials.

The object of the invention is to produce a separator to operate upon c'omnnnutcd fihrous materials such as ground charcoal and tale, in which shreds or flakes of a fibrous character are mingled with powdered or dis integrated matter, the machine being adapt ed to separate the powder-from the fibers; or

3 flakes, and the invention consists in the im-' define-din the claims. 35

. Fig. 2 a side elevation "Fig. 3. is a sectional plan. 3 outer casing, surrounding a rotary cylindrical proved separator hereinafter described, as

In the drawings Fi ure 1 is afront cleva: tion of a separator e1 odying the resent invention with part. of the casing bro en away, partly in section; and

l The separator consists generally, of an Screen. The comminuted material is fed into the rotary 'screen and the separation.

takes place therein, the powdery portion of the material passing out laterally through the screen and the fibrous or flaky portion of thematerial being arrested by, and falling "from the open end'of the screen, being discharged through a separate opening.

The casing comprises a prismatic upperportion 1, and a, pyramidal portion 2 extcnxih' mg from the lower end thereof and provided with an outlet 3. The top 4 of the casing] ,is closed except at the center, where the inlet for'thc material and air is located. The air is-introduced in a diagonal direction through a trunk 5 m untedupon the top 4 of the citsing. The. material is admitted "to the air trunk through a pipefi Which leads through the side-of the air. trunk and projects the material toward the center of the air blast. The

rotarv. cylindrical screen 7 is op'enat the top and bottom is supported upon arms S .tributeit throughout'thwacreqifeveolyjnd fixed to the shaft 9 by which the screen is actiiated. The screen shaft 9 is mounted in a bcaring-10 supported onthe trunk 5 and a step bearing 1 1 carried by across bar 12 near the bottom of the prismaticportion-1 of the casing. The upper end of the screenshaft 9 carries a bevel gear 13 which meshes with a. gesr 14 carried by 'a shaft l'5's'uptported in bearings lfi'on'the top of the trun 5, whichshaft 15 carries upon one ends-cone pulley 17 by which the screen may be driven at various s eds for the pu oses hereinafter de- 6-5 scribe cif One-half of t eperi' hora] surface of the rotary screen is embra by a-suction' hood 18 Which'constitutes' a. receptacle for the. powdered part-of the mdteqial-andi-leods 'to the discharge-passage 19 to whichitlie ey'e'qp of an exhaust fan (not shown) is attached. .f'. By'means of a small pipe 20 a'fialrtpi .the a.1r

1S conducted to the exterior of the? icon for- 4 'a purpose hereinafter setforthl f'." The 0 eratiomof the -machineisi'as 015 .lows a material to be gepm; flours; into the air trunk 5 throngh fthep'pe 6 and ls discharged with'the entern thc'lcen ter of t a rotary screen. ear-m8 ofthe screen, st the materialas'it'entrqdis 8o tend to prevent the material Thefibrous qril'akgl j nllaterial fall iiown :gto tie mmi a rtion.o-- icasmg"'f ".cje the are diischggged- 6?.63flih 3, wh e the finer portionslolfi I through-the r n and m i e mrg fl sch. 9

o no air through theioutlet -19." .ge i-fil, the

material which folls' into"thqfsoreen,-'as it takes up a rotary motion. therofi'pni, entrif1'1- gates to the surface of the screen, moving more largely in-th'e dirctionyf the-hood g I and. outlet 19 than in other sin-actions. .The-

particles of material. which do inotqpa'ss} through the screen into the lio'oditond to clog. p the screen at-thispoint but theysbreenlopen-iates to clear itself of such deposits. l "a soon as that portion. of the-screen innves" away from theho'od, the direction passing through the screen iere'versd, 0,

the particles previoi sly held Walls of the screen by .the 'm sursemth ou tsid e, are relessed and fall The material thus loosened from the walls of the screen is now subjected to a repetition of the se )arating process, the fibrous and flaky .pti-rtic es falling through the bottom of the rifhery of the cylinder than in the direction an element thereof. This arrangement has been chosen because it contributes to-the eflicient separation of the different kinds of fibrous materials from each other. it is' also believed that. the efficient openings in the screen through which particles pass, is

' dependentupon the speed of the rotation of 1 the outlet. 19;

the, separation 'of thefibrous portions of ground charcoal from the powdery portion,

and isuseful in connection with any material which isreduced, by grinding to a mixture of fibrous or flaky particles andpowder,

,ivhere the difierence unspecific gravity beter;

tween the large and small great. The problem which t e'inventorhas articles is not endeavored to solve by this .machine has been the separation of materials very closely approximating each other in the ca )acity to be su ported by a current of air. bus the fine ust and fibrous portions of ground charcoal closely approxnnate each other in thecapacity to besupportedby a' current of air, and the difficulty has been to separate the two from each other, centrifugal sepa raters having been found incapable of'separating efficiently substances of this charac One of the features of the invention which.

it is considered contributes'ipost markedly to its success with 'such' materials resides in the repeated ro'ections of the -inaterial against the wal s 0% the screen.

The invention is not limited to the illus trated embodiment but may be embodied in other and different forms within the scope of the following claims.

Having now described the invention what is claimed is 1. A separator forfibrous material having, incombination; a vertical cylindrical screen, means for rotating the screen, acasing surrounding the screen and provided with an air outlet embracing a. portion only of the screen, means for delivering material and a current of air to the upper end of the screen, and ,a rece tacle for'matorial falling to the bottom of described.

2.' A separator ing, in combination, a vertical cylindrical screen, means for rotating the screen, a casing surrounding the screen and provided with a lateral an outlet embracing a portion on! of the, screen, and meansTor introducing air {and material as described.

- 3. A separator for fibrous materials, having in combination, a vertical'cylindrical screen-provided with meshes elongatedhori of the screen, and means for delivering mate- 'screen, substantially as described." I

4 A separator for fibrous'materials,.l 1aving in con'ibination, a rotary screen provided .with a mesh elongated in its direction of rotation, means fir causing a current of air to 'ilow through portion of the screen, means for introducing materialto the aircurrent,

speeds su .istantially as described.

Intestimony whereof I aflix my signature, in presence of two witnesses. WI IJIJIAM S. OSBORNE.

Witnesses: Holmes VAN Evansn,

Farm 0. FIsr-I.

. I I p for fibrous nnitcruils havzontal-ly, .means for rotating'the screen, a casing surrounding-the screen and provided with an airoutlet embracinga portion only rialand'a current of air to the. interior of the t e screen, substantially as i into the screen, substantially and means for rotating the screen atyariable 

